Sorry, I have looked on the forum for a thread, youtube, other sites, and other forums and I can't get a straight answer. What is the difference in a stock/ spec motor vs. a modified motor. Same brand, same turn, and same everything. Not race classes, but motors. For example a Hobbywing 540 can 10.5t stock spec motor and a Hobbywing 540 can 10.5t modified. Thanks in advance I've been looking for hours.